<!DOCTYPE HTML>
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>close()</title>
  <script type="text/javascript">
    var mywin=window.open("http://www.imooc.com");
    mywin.close();

  </script>
</head>
<body>
</body>
</html>